cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A154594 Triangle read by rows: T(n, k) = [x^k] p(x, n), where p(x, n) = (-1)^n*(1 - 2*x)^(n + 1)* Sum_{j >= 0} (3*j + 2)^n*(2*x)^j.

Table of values

n a(n)
0 1
1 -2
2 -2
3 4
4 26
5 4
6 -8
7 -186
8 -240
9 -8
10 16
11 1090
12 4524
13 2008
14 16
15 -32
16 -5866
17 -57992
18 -85424
19 -16288
20 -32
21 64
22 30354
23 616452
24 2099504
25 1423968
26 130848
27 64
28 -128
29 -154202
30 -5902944
31 -39122296
32 -61925632
33 -22159968
34 -1048064
35 -128
36 256
37 776642
38 53083228
39 619239464
40 1884138544
41 1615232096
42 331200832
43 8387456
44 256

List of values

[1, -2, -2, 4, 26, 4, -8, -186, -240, -8, 16, 1090, 4524, 2008, 16, -32, -5866, -57992, -85424, -16288, -32, 64, 30354, 616452, 2099504, 1423968, 130848, 64, -128, -154202, -5902944, -39122296, -61925632, -22159968, -1048064, -128, 256, 776642, 53083228, 619239464, 1884138544, 1615232096, 331200832, 8387456, 256]